Hello only if your tv is the same brand as you dvd home......i think in this case you can not...this is why the output on the rear tv deliver only the signal to be amplified by any other device example a dvd.amplifier..etc saludos

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Have a look on the back input panel of the sc-dv290. Check for a "PHONO" input. If there is no phono input it will not play turntable. If there is: then plug it the turntable in and switch the SC-DV290 to PHONO mode.
Another way would be to purchase a "phono preamplifier" from ebay: Hook the turntable into the phono preamplifier, and the preamplifer into the SC-DV290 AUX input.

This reson you are not hearing any "TV AUDIO" through your RCA surround system would be due to your tv sound output not being connected to an audio input into your surround system. You can hear DVDs,CDs and radio possibly mp3 if connected, as these are built in to the amplifier which the speakers connect to.
If the tv has a Line out (via phono plugs) and NOT via headphone out, connect it to an audio input on the RCA surround system. If the RCA has no other available inputs, well....there ain't a lot you can do but watch CSI with the sound from the TV and then Star Wars (for example) through the TV and Surround system.
Best Of Luck

"When listening to a CD or radio, sound is output to the front
speakers (L/R) only. Select "PRO LOGIC II" by pressing
PL II (Dolby Pro Logic II) on the remote control to use all
six speakers.
• Make sure that the DVD disc is 5.1-CH compatible.
• If you set C, SL, and SR to NONE in the speaker mode in the
audio setup of the setup screen, no sound is heard from the
center speaker and the rear left and right speakers. Set C,
SL, and SR to SMALL."

This means you might want to check your speaker settings again and make sure the Cenyer and Surrounds are defined.

are you trying to use the surround sound for movies or music ? , ive got the dvd version of this system (sc-dv290) and ive noticed the surround sound tends not to perform well with music , but sounds great with movies. i think its because the movies have dolby digital and music does not. The dolby pro logic in my opinion doesnt really make that much of a difference in sound unless the sound is cranked up past 44db on the amplifier. the only cables you need are the ones that are attached to the surround sound speakers and they cannot be removed so it cant be the wiring . I reckon you have a 1 - faulty system 2 - listening to music 3 - maybe not pressing the pro logic button on the sound processor. Hope this helps

I am assuming that you are using a surround sound system?If so on the back of the satellite receiver you will have RCA cables labled yellow ,red,white uuse an rca cable to run from the output on the back of the sat box to an rca input on the surround sound unit.the inputs should be labled on the back of the surround sound unit.once you have the sat box plugged in look for the output on the surround sound (rca cables) run one set of rca cables to the rca cable input of the Tv.on the original tv remote select the tv input that is the cable from the surround sound is plugged in to . make sure the surround sound unit input is selected to the input that the sat box is plugged into.this will give you surround sound from your satellite receiver,repeat with your DVD player plugging the DVD rca cable output to another empty input on the surround sound.to switch between the sat box (satellite TV) to DvD select another input on the surround sound unit.Try to correspond the units you are plugging into the surround sound to the correct name of the component on the back of the surround sound unit to avoid confussion.any questions,Im here to help.If this works rate me FIXYA! if it helps.GOOD LUCK!